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Ningbo Jintian Copper (Group) Co., Ltd.
Ningbo Jintian Copper (Group) Co., Ltd.
Code
Copper

C2200 Copper

Copper

Grade Name

C2200 Copper Alloy (Low-Zinc Brass)


Key Features

  • Balanced Performance: Moderate strength with excellent thermal/electrical conductivity.

  • Machinability: Suitable for cold/hot working, welding, and complex shaping.

  • Corrosion Resistance: Stable in atmospheric and freshwater environments.

  • Eco-Friendly: RoHS-compliant, Pb ≤0.05%.


Product Forms & Dimensions

Form

Size Range

Standards

Rod

Diameter 1–350mm, Length 0.5–30m

JIS H 3250-19927

Plate

Thickness 0.5–80mm, Width 650–2000mm

JIS H 3100-20184

Wire

Diameter 0.1–15mm, Coil ≥5kg

ASTM B367

Tube

OD 6–530mm, Wall Thickness 0.5–50mm

JIS H 3100-20184

Strip

Thickness 0.1–3mm, Width ≤305mm

JIS H 3250-19929


Chemical Composition

Element

Content (%)

Standard Range

Cu

89.0–91.0

Main Component

Zn

Balance

Balance

Pb

≤0.05

JIS H 3100-20184

Fe

≤0.05


Impurities

≤0.2



Physical Properties

Property

Value/Description

Density

8.8 g/cm³

Melting Point

950–1000℃

Electrical Conductivity

28% IACS

Thermal Conductivity

125 W/(m·K)

Thermal Expansion

19×10⁻⁶/℃ (20–300℃)


Mechanical Properties

Condition

Tensile Strength (MPa)

Elongation (%)

Hardness (HRB)

Annealed (O)

≥225

≥35

50 HRB

1/4 Hard

255–335

≥25

70 HRB

Hard (H)

≥335

-

85 HRB


Core Advantages

  • Cost-Effective: Lower processing costs compared to pure copper.

  • Versatility: Adaptable to stamping, CNC, and welding.

  • Certifications: Meets RoHS and international standards.


Applications

  • Machinery: Gears, valves, and bearings.

  • Electronics: Connectors and relays.

  • Architecture: Door handles, decorative strips.

  • Automotive: Radiator components and valves.

  • Art & Daily Use: Medals, zippers, and metal mesh.


Processing Guidelines

  • Hot Working: 750–830℃, avoid brittleness at 200–700℃.

  • Annealing: 520–650℃ to optimize properties.

  • Cold Working: Control deformation to prevent cracks.


FAQs

Q1: Difference between C2200 and C2100?

A: C2200 has lower Cu (89–91% vs. 95–97% in C2100), higher Zn, offering higher strength but lower conductivity.


Q2: Anti-corrosion methods?

A: Avoid acidic environments, apply tin plating or protective coatings.


Standards

  • JIS H 3100-2018: Sheets, plates, and strips.

  • ASTM B36/B36M: Brass plates and strips.

  • DIN 17660: European brass standards.


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